Replacement Windows & Doors in Oxfordshire

We’ve been installing double glazing windows and replacement doors in Oxford and surrounding areas in Oxfordshire including Witney, Abingdon and Bicester since 1997 and pride ourselves on quality products with a high level of service to match.

Based in Bicester, Oxfordshire, we serve customers across a number of local counties, designing and fitting a range of quality doors and windows at competitive prices.

To ensure you get the best service, we’re accredited Fensa members and all of our installations comply with current thermal performance standards and come with a 10-year guarantee.

All installations are underwritten for 10 years by GGFi (Glass and Glazing Federation Insurance). With all of these benefits, you can be sure that our products and service standards exceed industry standards.

Our track record of excellent customer service comes from an independent Installation Quality Survey.

Why Choose Isis Windows?

High level of service

We’ve got years of experience and many happy customers across Oxford & Oxfordshire. We pride ourselves on great customer service and great quality products, all with a 10-year minimum guarantee.

Accreditations

We’re FENSA registered and all of our work comes with at least a 10 year guarentee, backed up by GGFi.

Established local company

Providing new Windows and Doors to Oxfordshire since 1997.

Our Range of Double Glazing Windows & Doors

We have a huge range of products for your home, whether you’re looking for ultra-modern Aluminium Windows or insulating uPVC Double glazing, we have something to suit your home and your needs.

Double Glazing Windows

UPVC Windows

We offer a full range of windows, from casement windows to sliding sash windows.

We have a wide range of windows and doors to suit your home and budget. Our Double Glazing Windows and Replacement Doors all come with a minimum of 10-years guarantee for your peace of mind

Isis – What’s in a name?

Isis is a name with a long, proud history. Its first recorded use is as Isa in 1350, while the first evidence of its modern form dates from 1577.

It was also the name of an Ancient Egyptian goddess, later worshipped by Greeks and Romans, but, in Oxford, Isis has long referred to the stretch of Thames north of Iffley Lock.

It comes from the old name for the River Thames, Tamesis, which in the Middle Ages was wrongly taken to be a combination of Thame and Isis.

Isis has long been associated with Oxford rowing. Its the name of the famous university’s reserve boat for its rowing crew, and of a student magazine first set up in 1892.

The university’s research and technology company is also called Isis, as are several other businesses and organisations keen to highlight their connections with Oxford.

We love Oxford and Oxfordshire, too, and are delighted to have our pride in our city reflected in our name.

About Isis Windows

When buying windows and doors it can be difficult remembering exactly what each representative has offered. In this event your buying decision may hinge on finding the most local company with the right credentials.

At Isis Windows we offer our customers a comprehensive design and build service fitting premium bespoke products that offer unbeatable value for money.

Our fitting teams have with over 25 years of installation experience, committed to delivering the highest standards of service and customer support.

As installers of Aluplast® Windows & Doors, we have shown our commitment to offering you high quality products and excellent customer service.

Contact Us

Registered as a limited company in England and Wales under company number: 05734024

By agreeing to a quotation / agreement you are also consenting to your personal data being shared with third parties for the purposes of fulfilling the requirements of the Competent Person Scheme for self-certification under the Building Regulations. Personal data includes title, name, address, phone and email numbers. This data will be used to provide essential documentation and will be retained on files for the lifetime of the guarantees which do not exceed 10 years.